Back in the old days one sheet was all you got. You had to figure out how
to arrange all of your data on one sheet. And never mind the fact that the
layout of numerous parts of your data was different from all the other
parts, it all had to go on that one sheet. This became an ever increasing
monumental task. Ergo, the multi-sheet workbook was born.
The 3-sheet thing is simply the Excel default when you open a new
workbook. You can easily delete or add sheets. You can also change the
Excel default of 3 sheets to any number of sheets, greater than zero, that
you want. Once you get into using a spreadsheet program, you will find that
it's very convenient to be able to put varying data on separate sheets.
HTH Otto
